>but now that I'm entering into the business life I want to eliminate my speech problem once and for all. This part stands out for me; I'd advise you to keep your expectative realistic, it's very hard to absolutely eliminate it, you can aim to get better and better but always keeping in mind you may have some bad days. ​ About changing your therapist... it depends, yours seems good as he is also taking in count he psychological part, but maybe you could learn other approachs that work better for you; trying it won't hurt and you may always return to the first one later if you find that's the best one for you. However I'd recomend you to see a psychologist, that's the part that seems to be holding you back now (you seem to be in a good place tho, but there are some expectations and thougts that may get a bit of work)